A Curve on the Hume Highway Has a Radius of 0.14

Multiple Choice

A curve on the Hume highway has a radius of 0.14 km and is unbanked. A car weighing 12 kN goes around the curve at a speed of 24 m/s without slipping. What is the magnitude of the horizontal force of the road on the car?

A) 12 kN
B) 17 kN
C) 13 kN
D) 5.0 kN
E) 49 kN